Stretching-machine.



J. S. YOUNG.

STRETCHING MACHINE.

FILED JULY 9.19m.

'L 4f il' 'fr I' L-75'27" Y l l Ng] A du l WITNESES INVENTOR WGS/@M7 J. S. YOUNG.

STRETCHING MACHINE.

APPLICATION min JULY 9. |915.

Patented Nov. 30, 1.915.

2 SHEETS-SHEET 2.

INVENTOR WITNISSES narran sTaTns raTnnT ermee.

JESSE S. YOUNG, OF'TOLEDO, OHIO.

sTRETcHINe-MAGHINE To all whom t may concern Be it known that I, JESSE S. YOUNG, a citizen of the United States, and a resident of Toledo, in the county of Lucas and State of Ohio, have invented a certain new and useful Stretching-Machine; and I do hereby declare the following to be a full, clear, and eX- act description of the invention, such as will enable others vskilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this specification.

My invention relates to stretching machines.

yIt particularly relates to a canvas stretching machine used in the manufacture of heavy belts. When the canvas is stretched in the operation of the machine it is filled and covered by a material, which, when dried, causes it to be retained in its stretched condition. The canvas so stretched may be placed between and cemented to two layers of leather. Belts so made are devoid of further stretching, the stretch having been completely taken out of the canvas by the operation of the machine. r

The machine provides a means whereby the sheet material is not only stretched'but also whereby it may be held in its stretched condition while the filling material is given time to harden while other parts of bolts Yof canvas are being worked upon.

The ,invention may be contained in many forms of constructions usable for different purposes, all of which come within the'purview of my claims hereinafter appended. To show the practicability of my invention I have selected one of such constructions as an example and shall describe it hereinafter. The construction selected is-shown in the accompanying drawings.

Figure 1 ofthe drawings vis a perspective view of the machine showing a portion of the canvas sheet being stretched and also a portion in the position for drying after the filling material has been applied. Fig. 2 is a plan view of a part of the stretching mechanism shown in Fig. 1. Fig. 3 is a section of a part of the stretching mechanism shown in Figs. l and 2.

1, Fig. 1, are a pair of verticalv beams which may be secured by braces or ties 2. The beams l may be made of any suitable material, but I find it preferable to make Specicaton of Letters Patent. Patented NGV. 30, 191,5 Application inea July a, 1915.

Serial No. 38,944.

them of channel iron. In the form of the invention shown in the drawing they are secured to the floor by means of an angle iron 3 and to the ceiling by means of the angle iron 1. The ties 2 may also be formed of channel iron and secured to the uprights 1 by means of the straps 5, which are bolted to the upper ends of the standards 1 and the ties 2. The ties 2 may also be secured to the floor by means of the angle iron 6.

The ties 2 are provided with brackets ,10, which form bearings for supporting on the spindles 8 bolts of canvas 11 and 12. A portion 9 ofthe canvas is drawn from'the lower bolt 11 and is passed to and through the stretching mechanism of the machine. One end of the bolt of canvas is anchored to a pair of standards 15 which are also secured by ties 16. The standards and ties 15 and 16 are also secured to the floor, substantially 1n the same way that the standards 1 and the ties2 are secured tothe floor and ceiling,

namely, by the angle irons 17, 18 and 19 and by the straps 20. The end of the canvas is secured between two cross bars 25, which'are bolted together, as shown in Fig. 2, so as to clamp the end ofthe'canvas. V'Ihe cross bars 25 are also bolted by means of the bolts 26 to a second cross bar 27. The cross bar 27 is secured to a V-iron 28, ywhich is connected to a cross shaft 29 by means of the bolt 3l. The cross shaft 29 is keyed to two gear wheels 30. The gear wheels 30 and 31 move upon racks 35, which are secured to the standards 15 on the outside, that is, the side farthest Vfrom the stretching device. The ends of the V-iron 28 are secured to blocks 36 t0 vwhich it is secured at the end thereof. Fingers 37 are secured to the blocks 86 and so as to extend over the flanges on the rear rside of the channel iron of which the standards 15 are formed. The fingers 37 operate to keepy thegear wheels 30 on the racks 35 and guide the shaft 29 and gear wheels' 80 and thel mechanism' connected therewith in their vertical movements when the gearwheels are'rotated.l The shaft'29 protrudes at'one end'and is provided with a crank 40 for'purposje's of rotation.

The canvas from the bolt'll'fis also 'passed f through a pair of cross bars 45, which are also bolted together vso as to clamp the canvas. The cross bars Ll5 are also bolted to a cross bar 46 by means of the eye bolts 17. A block 49, preferably in the form of an L, is located infront of the cross bar L16 and is securely connected vby means of a `bolt 50 to a threaded shaft 51 which extends through the cross bar 46. The long threaded ,Slllft is supported and guided for longitudinal movements in a frame 52 having a heavy cross block 53. lThe block 53 is provided with a bearing 54 of suitable length through which the shaft 51 extends. It is also provided with a bearing 55 in which is secured a shaft 56 by means of the nut 57, `the washer 58and the collar 59,. The frame 52 is made secure to the standards by means of the straps 64. A pulley wheel 65 is keyed to a sleeve 66 located onk the shaft 56 to which is also keyed a pinion 67. The pulley wheel 65 may beV operated by means .of the belt 68 and a suitable driving means to cause rotation Vof the pinion 67, which operates upon the cog-wheel 69. rThe Vcog-wheel 69 threaded on the shaft 51, and when rotated moves the shaft 51 longitudinally. Y The hub of the cog-,wheel 69 isy provided with Aa groove 75. A finger 76, which is bolted to the top of the block 53, extends in lthe Igroove and holds the hub of vthe ,cog-wheel 69 against the end of the bearing 5,4 to canse the threaded shaft 51 to move inwardly with respect tothe stretching mechanism. When the cog-wheel 69 is jrotated and the canvas is secured kto the cross-bars 25 and 45, ,the shaft 51 operates to stretch the canvas so that when fifty feet of canvas, .or thereabout, is located between the cross `bars`25r and 625, the canvas will vrbe stretched some ten to twenty feet, thereby taking all of the stretch out of the canvas. When the canvas has been stretched to the desired extent, it isfcovered onboth sides with the filling material which enters all of` the pores and covers the canvas` and when allowed to `dry causes the canvas to be retained in its stretched condition, so that when the canvas is inserted in the belt or made to form a part of a belt the belt will stretch no farther inthe use thereof. A belt will thus be produced which is reliable Aand which will retain its condition when in use so `that frequent lacings, re-fastening of the ends or readjustment of the belt will be entirely done away with, making the product of the machine an exceedingly valuable one.

vWhen the canvas has been covered and filled with the filling material, hooks SOare connected to the eye-bolts 47. The hooks SO are also connected to the cross-shaft 81 to which are `keyed gear wheels 82, similar in construction to the gear wheels 30. The gear wheels82 mesh with the racks 83, which are located on theoutside of the channel irons. A crank handle 83 is also keyed to the 'cross-shaft 81 and when rotated will rotate the gear wheels 82 and raise the cross bar 46 after the pin 50 has been withdrawn from the block 49 .and the end of the threaded shaft v5 1'withdrawn from the .cross-bar 46. At the same time that the crank 83 is rotated the crank 40 is also rotated, which lifts the cross-.bars secured to the canvas together with the canvas, which has now been .stretched and filled with the lling material. lf desired a horse 85 having rollers 86 and a flange 87 may be provided for conveniently supporting the cross bars 25 and L15 while the same are l'beingA connected to the V-bar 28 and the threaded shaft 51. The bolt spindles may then beplaced von an upper pair of bearing members 110. Anotherbolt of canvas and another length of ,the ,canvas is likewise operated upon.' 1t is first stretched in the stretching device and then filled and covered with a =filling material and is then raised to the upper portion of the machine. lhen the canvas has been thus stretched and filled and the bolts'have been placed in position so as to be supported by ,the bearing brackets 10, they ,are allowed to remain until the material has become hardened. Ifdesired, the canvas may be carried ,through the braces and standards land passed underneath the other bdlts which are being dried and operated upon by the stretching dej/ice andc'overed and ,filled Awith the yfilling niaterial, so as to produce a .continuousv performance in the'oper'ation yof ,the machine, the number of bolts suiiicientto allow one jto dry while ,the others are being stretched and covered. In this way, part by part, the bolts of canvas `may bestretched and lled with the filling material. l

yThe construction vselected ,and ldescribed may be greatly varied in thearrangement and manufacture of its parts and in v,the substitution of elements having equivalent functions and ,such modifications maybe used for vmany varied :purposes still contain Athe invention.

What 1 claim as new, and desire yto secure by Letters Patent, kis,f k

1. In la sheet material stretching machine, the combination of la pair of clamping means, meets for @haberme 011e lfff the clamping means, a threaded shaft secured A t0 the other of the clamping means, a wheel threaded onv the saidfshaft, means for4 ifotating the `wheel to :draw lthe shaft 'through the wheel land stretch the sheet material 'located between the pair `of clampingl Ine'ans and means for shittingy the sheet material and the pair d'of clairniingmeainsl while the materialis ,under tension. 'D 'i .2. In a sheet materiali stretching machine, the combination a fof "clamping means, wheelssecured to the'clamping means, and Standards lon which the xwli'elels"may be rotated to raise the .clamping ineans and the sheet material connected therewith. A

3. lIn a sheet material stretching inachine, the combination vof a vpair of Aclamping means, cogwheels secured to the clamping means, standards non `whichthe cog-wheels may be rotated to raise the clamping means and the sheet material connected therewith, racks with which the cog-wheels mesh, and means for rotating the cog-wheels.

4. In a sheet material stretching machine, the combination of two pairs `of standards, bearing brackets for supporting bolts of the sheet material, a pair of clamping means for clamping parts of the sheet material, wheels capable of rotation on one pair of the standards and secured to one of the clamping means, and a pair of wheels secured to the other of the clamping means and capable of rotation on the other pair of standards.

5. In a sheet material stretching machine, the combination of two pairs of standards, bearing brackets Jfor supporting bolts of the sheet material, a pair of clamping means for clamping parts of the sheet material, cogwheels capable of rotation on one pair of the standards and secured to one of the clamping means, a pair of cog-wheels secured tothe other of the clamping means and capable of rotation on the other pair of standards, racks meshing with the said cogwheels, and means Jfor rotating the said cogwheels.

6. In a sheet material stretching machine, the combination of a pair of clamping means, means for anchoring one of the clamping means, means secured to the other of the clamping means for drawing it from the anchored clamping means for stretch-v ing the sheet material located between the pair of clamping means, and means `or shifting the sheet material and the pair of clamping means while the material is under tension.

In testimony whereof, I have hereunto signed my name to this specification.

JESSE S'. YOUNG.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington. D. C. 

